A charity auction for lunch with Warren Buffett drew a winning bid of $3,456,789 from an anonymous fan of the billionaire investor, matching the record amount collected in 2012.

Including this year’s haul, the auction has raised more than $23 million since 2000 for Glide, a San Francisco charity that works for the city’s homeless and poor residents. Mr. Buffett was introduced to Glide by his first wife, Susie Buffett, who was a volunteer there and conceived of the charity auction idea. She died in 2004.